Titanium Dropship - They Came from Planet Tubby

"The origins of these strange biomechanical aliens are shrouded in mystery.  They dance and babble in childlike voices, until they suddenly disappear, only to turn up on a new world.  Strangely, they can communicate instantly with others of their kind via their abdominal view screens, and so have become a widely used faster-than-light messaging network for other species.  They have been known to alarm some human religious leaders, but are considered an extremely useful oddity by most sentients." 

By Allison from the Painting Agency.